A hydraulic propeller position adjustment system

Abstract

A hydraulic adjustment system for the position of a propeller, comprising: a height adjustment mechanism, a fixed bracket, an angle adjustment mechanism, and a propeller propulsion device; the height adjustment mechanism is fixedly arranged on the stern steel plate, the power output end of the height adjustment mechanism passes through the stern steel plate and is fixedly connected to the side of the fixed bracket, the power output end of the height adjustment mechanism is in transmission cooperation with the angle adjustment mechanism through the fixed bracket, the housing of the angle adjustment mechanism passes through the stern steel plate and is in sliding cooperation with the stern steel plate, the housing of the angle adjustment mechanism is in sealing cooperation with the stern steel plate, and the rotating shaft of the angle adjustment mechanism is fixedly connected to the top of the propeller propulsion device. This design can not only achieve the height adjustment and angle adjustment of the propeller propulsion device through the height adjustment mechanism and the angle adjustment mechanism, effectively improving the convenience of the system, but also can hold the fixed bracket through the locking mechanism to avoid damage caused by the long-term force on the oil cylinder of the height adjustment mechanism, effectively extending the service life of the system.

Description

Technical Field

[0001] The present invention relates to a hydraulic system, and more particularly to a hydraulic propeller position adjustment system, specifically applicable to a hydraulic propeller position adjustment system that realizes high-precision height adjustment and angle adjustment of a propeller through hydraulic drive. Background Art

[0002] Propeller propulsion is a common ship propulsion method at present. The propeller is usually fixedly arranged at the rear or both sides of the hull. The propeller blades are rotated in water by an engine, continuously pushing a large amount of liquid (propulsion medium) backward, generating a forward force on the propeller blades, that is, the propulsion force.

[0003] Although this structure is mature, reliable and has strong propulsion force, it still has the following defects:

[0004] 1. The propeller is in the seawater environment for a long time, and material corrosion will occur, resulting in the propeller being eroded, greatly shortening its service life. When repairing or replacing, the propeller is underwater, and the operation difficulty is large, increasing the use and maintenance costs.

[0005] 2. The propeller propulsion direction is single, which is not conducive to hull direction adjustment. For some ships with high maneuverability requirements and special uses (such as scientific research ships, monitoring ships, etc.), at present, an auxiliary propeller is installed to assist in hull direction adjustment. The auxiliary propeller is mostly a tunnel-type lateral propeller, which has high noise and large resistance to the ship, and cannot meet the use requirements of the ship. Summary of the Invention

[0006] The object of the present invention is to overcome the disadvantages in the prior art that the propeller in the seawater environment for a long time increases the use and maintenance costs, and at the same time the propeller propulsion direction is single, and provides a hydraulic propeller position adjustment system that realizes high-precision height adjustment and angle adjustment of the propeller through hydraulic drive.

[0007] To achieve the above object, the technical solution of the present invention is:

[0008] A hydraulic adjustment system for the position of a propeller. The hydraulic adjustment system includes: a height adjustment mechanism, a fixed bracket, an angle adjustment mechanism, and a propeller propulsion device. The height adjustment mechanism is fixedly arranged on the stern steel plate. The power output end of the height adjustment mechanism passes through the stern steel plate and is fixedly connected to the side of the fixed bracket. The fixed bracket is sleeved on the upper end of the angle adjustment mechanism. The power output end of the height adjustment mechanism is in transmission cooperation with the angle adjustment mechanism through the fixed bracket. The housing of the angle adjustment mechanism passes through the stern steel plate and is in sliding cooperation with the stern steel plate. The housing of the angle adjustment mechanism is in sealed cooperation with the stern steel plate. The rotating shaft of the angle adjustment mechanism is fixedly connected to the top of the propeller propulsion device. The oil inlets of the height adjustment mechanism and the angle adjustment mechanism are both connected to the oil outlet of the hydraulic pump station.

[0009] The hydraulic pump station includes a hydraulic oil tank, a main pump group, a pressure detection component, a cooler, and a filter. The main pump group is a series of a motor-driven load-sensitive pump and a fixed-displacement pump. The oil inlet of the main pump group is arranged in the hydraulic oil tank. The oil outlet of the main pump group is connected to the oil inlet of the pressure detection component. The oil outlet of the pressure detection component is respectively connected to the oil inlets of the height adjustment mechanism, the angle adjustment mechanism, and the locking mechanism. The oil return ports of the height adjustment mechanism, the angle adjustment mechanism, and the locking mechanism are all connected to the oil inlet of the cooler. The oil outlet of the cooler is connected to the oil inlet of the filter. The oil outlet of the filter is connected to the oil return port of the hydraulic oil tank.

[0010] The height adjustment mechanism includes two lifting cylinders. The oil inlets of the two lifting cylinders are both connected to the oil outlet of the hydraulic pump station. The oil outlets of the two lifting cylinders are both connected to the oil return port of the hydraulic pump station. The two lifting cylinders are respectively arranged on both sides of the propeller propulsion device. The cylinder bases of each lifting cylinder are fixedly arranged on the outside of the stern steel plate. The cylinder bases of each lifting cylinder are in sealed connection with the stern steel plate. The telescopic rods of each lifting cylinder pass through the stern steel plate and are fixedly connected to both sides of the bottom of the fixed bracket. The angle adjustment mechanism is arranged between the two lifting cylinders.

[0011] The hydraulic adjustment system includes a locking mechanism. The locking mechanism includes a directional control valve, a speed control valve, and two locking cylinders. The directional control valve is a three-position four-way O-type function electromagnetic directional control valve. The oil inlet of the directional control valve is connected to the oil outlet of the pressure detection component. The oil return port of the directional control valve is connected to the oil inlet of the cooler. The first working port of the directional control valve is connected to the first working port of the speed control valve. The second working port of the directional control valve is connected to the second working port of the speed control valve. The first working port of the speed control valve is connected to the rod-end oil ports of the two locking cylinders. The second working port of the speed control valve is connected to the non-rod-end oil ports of the two locking cylinders. A support block is fixedly arranged at the end of the telescopic rod of each of the two locking cylinders. The two support blocks are respectively in limit cooperation with both ends of the bottom of the fixed bracket.

[0012] The angle adjustment mechanism includes a compensator, an angle main control valve, a balance valve and two hydraulic motors. The angle main control valve is a three-position four-way Y-type function proportional reversing valve. The oil inlet of the compensator is communicated with the oil outlet of the pressure detection component. The oil outlet of the compensator is communicated with the oil inlet of the angle main control valve. The first working port of the angle main control valve is communicated with the oil inlet of the first loop of the balance valve. The oil outlet of the first loop of the balance valve is respectively communicated with the first working ports of the two hydraulic motors. The second working port of the angle main control valve is communicated with the oil inlet of the second loop of the balance valve. The oil outlet of the second loop of the balance valve is respectively communicated with the second working ports of the two hydraulic motors. The drain ports of the two hydraulic motors are both communicated with the oil inlet of the cooler. The first loop and the second loop of the balance valve are communicated with each other through three balance loops. Two of the balance loops are each provided with a safety valve, and the other balance loop is provided with a cut-off valve.

[0013] The hydraulic adjustment system further includes two guide rails. The ends of the two guide rails are fixedly arranged on the inner side of the stern steel plate. The two guide rails are respectively arranged on both sides of the angle adjustment mechanism. A limiting hole is respectively opened at the position of the fixed bracket corresponding to the two guide rails. The fixed bracket is slidably matched with the two guide rails through the two limiting holes opened thereon.

[0014] The height adjustment mechanism includes two lifting cylinders, a flow dividing and collecting valve, two explosion-proof overflow balance devices, a safety valve, a one-way throttle valve group, a manual reversing valve, a height main control valve, a compensator, a primary safety valve and a secondary safety valve. The manual reversing valve is a three-position four-way O-type function manual reversing valve. The height main control valve is a three-position four-way O-type function proportional reversing valve. The oil inlets of the manual reversing valve, the height main control valve, the primary safety valve and the secondary safety valve are all communicated with the oil outlet of the pressure detection component. The oil return ports of the safety valve, the manual reversing valve, the height main control valve, the primary safety valve and the secondary safety valve are communicated with the oil inlet of the cooler. The first oil inlet of the manual reversing valve is communicated with the first working port of the height main control valve and the first working port of the one-way throttle valve group. The second oil inlet of the manual reversing valve is communicated with the second working port of the height main control valve and the second working port of the one-way throttle valve group. The first oil outlet of the one-way throttle valve group is communicated with the collecting port of the flow dividing and collecting valve. The two oil outlets of the flow dividing and collecting valve are respectively communicated with the rod chambers of the two lifting cylinders. The second oil outlet of the one-way throttle valve group is respectively communicated with the oil inlets of the two explosion-proof overflow balance devices. The two explosion-proof overflow balance devices are respectively connected with the rodless chambers of the two lifting cylinders. The first oil outlet and the second oil outlet of the one-way throttle valve group are both communicated with the oil inlet of the safety valve. The oil return port of the safety valve is communicated with the oil inlet of the cooler.

[0015] The hydraulic regulation system further includes a pressure alarm mechanism. The pressure alarm mechanism includes a one-way throttle valve, a first shuttle valve, a second shuttle valve, a third shuttle valve, and a fourth shuttle valve. The load sensing port of the main pump group is communicated with the oil inlet of the one-way throttle valve. The oil outlet of the one-way throttle valve is respectively communicated with the load sensing ports of the first shuttle valve, the second shuttle valve, the third shuttle valve, the fourth shuttle valve, and the compensator. One working port of the first shuttle valve is respectively communicated with the rod chambers of each locking cylinder, and the other working port of the first shuttle valve is respectively communicated with the rodless chambers of each locking cylinder. The two working ports of the second shuttle valve are respectively communicated with the two oil outlets of the one-way throttle valve group. The two working ports of the third shuttle valve are respectively communicated with the two oil outlets of the angle main control valve. The two working ports of the fourth shuttle valve are respectively communicated with the second working port of the electromagnetic switching valve and the oil inlet of the speed control valve. The electromagnetic switching valve is a two-position four-way electromagnetic reversing valve. The oil outlet of the speed control valve is respectively communicated with the oil inlets of the rod chambers of the two brake cylinders. The telescopic rod of the brake cylinder is elastically matched with the cylinder block of the brake cylinder through a spring. The spring is arranged in the rodless chamber of the brake cylinder. A brake caliper is fixedly arranged at the end of the telescopic rod of the brake cylinder. The brake caliper is in transmission cooperation with the rotating shaft.

[0016] The hydraulic pump station further includes an emergency pump group. The emergency pump group is a gear pump driven by an electric motor. The oil inlet of the emergency pump group is arranged in the hydraulic oil tank. The oil outlet of the emergency pump group is communicated with the oil inlet of the pressure detection component. One end of the angle adjustment mechanism is fixedly connected to the bottom of the fixed bracket, and a limit plate is fixedly arranged at the other end of the angle adjustment mechanism. A limit hole for cooperating with the cylinder block of the lifting cylinder is opened at each end of the limit plate. Both ends of the limit plate are slidably matched with the lifting cylinders in their corresponding directions through the limit holes opened thereon.

[0017] The explosion-proof overflow balance device includes an explosion-proof valve, a secondary overflow valve, and a lifting balance valve. The oil outlets of the lifting balance valves in the two explosion-proof overflow balance devices are communicated with each other, and the working ports of the lifting balance valves in the two explosion-proof overflow balance devices are communicated with each other. The rodless chamber of the lifting cylinder is communicated with the oil inlet of the lifting balance valve. The two working ports of the secondary overflow valve are respectively connected in parallel at both ends of the lifting balance valve.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. In a hydraulic adjustment system for the position of a propeller according to the present invention, it includes a height adjustment mechanism and an angle adjustment mechanism. The height adjustment mechanism is fixedly arranged outside the stern steel plate. The telescopic rod of the height adjustment mechanism passes through the stern steel plate and is fixedly connected to the bottom of a fixed bracket. The bottom of the fixed bracket is fixedly connected to the top of the angle adjustment mechanism. The angle adjustment mechanism passes through the stern steel plate and is fixedly connected to the top of the propeller propulsion device through a rotating shaft. When the height adjustment mechanism works, it can drive the angle adjustment mechanism and the propeller propulsion device to move up and down synchronously. When entering the port or during maintenance, the propeller propulsion device can be conveniently raised. At the same time, the angle adjustment mechanism can control the rotation of the propeller propulsion device in the horizontal direction to change the propeller propulsion direction, facilitating the adjustment of the hull direction. Therefore, this design can achieve the height adjustment and angle adjustment of the propeller propulsion device through the height adjustment mechanism and the angle adjustment mechanism, effectively improving the convenience of the system.

[0020] 2. The locking mechanism in a hydraulic adjustment system for the position of a propeller according to the present invention includes two locking cylinders. At the end of the telescopic rods of the two locking cylinders, a support block is fixedly arranged respectively. The two support blocks are in limit cooperation with the two ends of the bottom of the fixed bracket respectively. The rod-end chambers of the two locking cylinders are both connected to the first working port of a speed control valve, and the rodless chambers of the two locking cylinders are both connected to the second working port of the speed control valve. So that the two locking cylinders can work synchronously under the drive of the speed control valve. When the height adjustment mechanism raises the angle adjustment mechanism and the propeller propulsion device, the rod-end chambers of the locking cylinders are supplied with oil, the telescopic rods of the locking cylinders shorten, driving the support blocks to leave below the fixed bracket. When the angle adjustment mechanism and the propeller propulsion device are raised to the highest position, the rod-end chambers of the locking cylinders are drained of oil, and the springs in the rodless chambers of the locking cylinders work, the telescopic rods of the locking cylinders elongate, driving the support blocks to move below the fixed bracket to support the fixed bracket, avoiding damage to the cylinder of the height adjustment mechanism caused by long-term force. Therefore, this design can support the fixed bracket through the locking mechanism, avoiding damage to the cylinder of the height adjustment mechanism caused by long-term force, and effectively extending the service life of the system.

[0021] 3. In a hydraulic adjustment system for the position of a propeller according to the present invention, the fixed bracket is in limit cooperation with two guide rails. The bottom of the fixed bracket is fixedly connected to the angle adjustment mechanism. At the other end of the angle adjustment mechanism, a limit plate is fixedly arranged. At each end of the limit plate, a limit hole matching with the cylinder seat of a lifting cylinder is opened. Both ends of the limit plate are slidably matched with the corresponding lifting cylinders through the limit holes opened thereon. When the angle adjustment mechanism and the propeller propulsion device move up and down synchronously, they are stable and will not displace in the horizontal direction, avoiding the propeller propulsion device from touching the hull. Therefore, this design can make the system stable during height adjustment and avoid the propeller propulsion device from touching the hull through the limit cooperation between the fixed bracket and the guide rails, and at the same time, the limit cooperation between the limit plate and the lifting cylinders.

[0022] 4. In the hydraulic pump station of the hydraulic adjustment system for the propeller position of the present invention, an emergency pump group is further included. The inlet of the emergency pump group is arranged in the hydraulic oil tank, and the outlet of the emergency pump group is communicated with the inlet of the pressure detection component. When the main pump group of the hydraulic pump station is damaged, the system can temporarily provide hydraulic oil through the emergency pump group, avoiding the system being unable to work due to the damage of the main pump group. Therefore, the emergency pump group in this design can temporarily provide hydraulic oil when the main pump group is damaged, effectively improving the reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the present invention.

[0024] Figure 2 is a schematic structural diagram of the propeller propulsion device in the middle position of the present invention.

[0025] Figure 3 is a schematic structural diagram of the propeller propulsion device in the lowest position of the present invention.

[0026] Figure 4 is the hydraulic schematic diagram of the present invention.

[0027] In the figure: height adjustment mechanism 1, lifting oil cylinder 11, flow dividing and collecting valve 12, explosion-proof overflow balancing device 13, safety valve 14, one-way throttle valve group 15, manual reversing valve 16, height main control valve 17, compensator 18, first-stage safety valve 19, second-stage safety valve 20, fixed support 2, angle adjustment mechanism 3, limit plate 40, angle main control valve 32, balance valve 33, hydraulic motor 34, safety valve 35, cut-off valve 36, speed regulating valve 37, electromagnetic switching valve 38, braking oil cylinder 39, limit plate 40, rotating shaft 41, propeller propulsion device 4, stern steel plate 5, guide rail 6, hydraulic pump station 7, hydraulic oil tank 71, main pump group 72, pressure detection component 73, cooler 74, filter 75, emergency pump group 76, locking mechanism 8, reversing valve 81, speed regulating valve 82, locking oil cylinder 83, pressure alarm mechanism 9, one-way throttle valve 91, first shuttle valve 92, second shuttle valve 93, third shuttle valve 94, fourth shuttle valve 95, explosion-proof valve 96, secondary overflow valve 97, lifting balance valve 98. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0029] See Figures 1 to 4, a hydraulic propeller position adjustment system, the hydraulic adjustment system comprising: a height adjustment mechanism 1, a fixed bracket 2, an angle adjustment mechanism 3, and a propeller propulsion device 4; the height adjustment mechanism 1 is fixedly arranged on the stern steel plate 5, the power output end of the height adjustment mechanism 1 passes through the stern steel plate 5 and is fixedly connected to the side of the fixed bracket 2, the fixed bracket 2 is sleeved on the upper end of the angle adjustment mechanism 3, the power output end of the height adjustment mechanism 1 is in transmission cooperation with the angle adjustment mechanism 3 through the fixed bracket 2, the housing of the angle adjustment mechanism 3 passes through the stern steel plate 5 and is in sliding cooperation with the stern steel plate 5, the housing of the angle adjustment mechanism 3 is in sealing cooperation with the stern steel plate 5, the rotating shaft 41 of the angle adjustment mechanism 3 is fixedly connected to the top of the propeller propulsion device 4, and the oil inlets of the height adjustment mechanism 1 and the angle adjustment mechanism 3 are both communicated with the oil outlet of the hydraulic pump station 7.

[0030] The hydraulic pump station 7 includes a hydraulic oil tank 71, a main pump group 72, a pressure detection component 73, a cooler 74, and a filter 75. The main pump group 72 is a motor-driven load-sensitive pump in series with a fixed-displacement pump. The oil inlet of the main pump group 72 is arranged in the hydraulic oil tank 71. The oil outlet of the main pump group 72 is communicated with the oil inlet of the pressure detection component 73. The oil outlet of the pressure detection component 73 is respectively communicated with the oil inlets of the height adjustment mechanism 1, the angle adjustment mechanism 3, and the locking mechanism 8. The oil return ports of the height adjustment mechanism 1, the angle adjustment mechanism 3, and the locking mechanism 8 are all communicated with the oil inlet of the cooler 74. The oil outlet of the cooler 74 is communicated with the oil inlet of the filter 75. The oil outlet of the filter 75 is communicated with the oil return port of the hydraulic oil tank 71.

[0031] The height adjustment mechanism 1 includes two lifting cylinders 11. The oil inlets of the two lifting cylinders 11 are both communicated with the oil outlet of the hydraulic pump station 7. The oil outlets of the two lifting cylinders 11 are both communicated with the oil return port of the hydraulic pump station 7. The two lifting cylinders 11 are respectively arranged on both sides of the propeller propulsion device 4. The cylinder seats of each lifting cylinder 11 are fixedly arranged on the outside of the stern steel plate 5. The cylinder seats of each lifting cylinder 11 are in sealing connection with the stern steel plate 5. The telescopic rods of each lifting cylinder 11 pass through the stern steel plate 5 and are fixedly connected to both sides of the bottom of the fixed bracket 2. The angle adjustment mechanism 3 is arranged between the two lifting cylinders 11.

[0032] The hydraulic adjustment system includes a locking mechanism 8. The locking mechanism 8 includes a directional control valve 81, a flow control valve 82, and two locking cylinders 83. The directional control valve 81 is a three-position four-way O-type function electromagnetic directional control valve. The oil inlet of the directional control valve 81 is communicated with the oil outlet of the pressure detection component 73. The oil return port of the directional control valve 81 is communicated with the oil inlet of the cooler 74. The first working port of the directional control valve 81 is communicated with the first working port of the flow control valve 82. The second working port of the directional control valve 81 is communicated with the second working port of the flow control valve 82. The first working port of the flow control valve 82 is communicated with the rod chamber oil ports of the two locking cylinders 83. The second working port of the flow control valve 82 is communicated with the non-rod chamber oil ports of the two locking cylinders 83. A support block is fixedly arranged at the end of the telescopic rod of each of the two locking cylinders 83. The two support blocks are respectively in limit fit with the two ends of the bottom of the fixed bracket.

[0033] The angle adjustment mechanism 3 includes a compensator 31, an angle main control valve 32, a balance valve 33, and two hydraulic motors 34. The angle main control valve 32 is a three-position four-way Y-type function proportional directional control valve. The oil inlet of the compensator 31 is communicated with the oil outlet of the pressure detection component 73. The oil outlet of the compensator 31 is communicated with the oil inlet of the angle main control valve 32. The first working port of the angle main control valve 32 is communicated with the oil inlet of the first circuit of the balance valve 33. The oil outlet of the first circuit of the balance valve 33 is respectively communicated with the first working ports of the two hydraulic motors 34. The second working port of the angle main control valve 32 is communicated with the oil inlet of the second circuit of the balance valve 33. The oil outlet of the second circuit of the balance valve 33 is respectively communicated with the second working ports of the two hydraulic motors 34. The drain ports of the two hydraulic motors 34 are both communicated with the oil inlet of the cooler 74. The first circuit and the second circuit of the balance valve 33 are communicated through three balance circuits. Two of the balance circuits are each provided with a safety valve 35, and the other balance circuit is provided with a cut-off valve 36.

[0034] The hydraulic adjustment system further includes two guide rails 6. The ends of the two guide rails 6 are fixedly arranged inside the stern steel plate 5. The two guide rails 6 are respectively arranged on both sides of the angle adjustment mechanism 3. A limit hole is respectively opened at the position of the fixed bracket 2 corresponding to the two guide rails 6. The fixed bracket 2 is in sliding fit with the two guide rails 6 through the two limit holes opened thereon.

[0035] The height adjustment mechanism 1 includes two lifting oil cylinders 11, a flow dividing and collecting valve 12, two explosion-proof overflow balancing devices 13, a safety valve 14, a one-way throttle valve group 15, a manual reversing valve 16, a height main control valve 17, a compensator 18, a primary safety valve 19 and a secondary safety valve 20. The manual reversing valve 16 is a three-position four-way O-type function manual reversing valve, and the height main control valve 17 is a three-position four-way O-type function proportional reversing valve. The oil inlets of the manual reversing valve 16, the height main control valve 17, the primary safety valve 19 and the secondary safety valve 20 are all connected to the oil outlet of the pressure detection component 73. The oil return ports of the safety valve 14, the manual reversing valve 16, the height main control valve 17, the primary safety valve 19 and the secondary safety valve 20 are connected to the oil inlet of the cooler 74. The first oil inlet of the manual reversing valve 16 is connected to the first working port of the height main control valve 17 and the first working port of the one-way throttle valve group 15. The second oil inlet of the manual reversing valve 16 is connected to the second working port of the height main control valve 17 and the second working port of the one-way throttle valve group 15. The first oil outlet of the one-way throttle valve group 15 is connected to the collecting port of the flow dividing and collecting valve 12. The two oil outlets of the flow dividing and collecting valve 12 are respectively connected to the rod chambers of the two lifting oil cylinders 11. The second oil outlet of the one-way throttle valve group 15 is respectively connected to the oil inlets of the two explosion-proof overflow balancing devices 13. The two explosion-proof overflow balancing devices 13 are respectively connected to the rodless chambers of the two lifting oil cylinders 11. The first oil outlet and the second oil outlet of the one-way throttle valve group 15 are both connected to the oil inlet of the safety valve 14. The oil return port of the safety valve 14 is connected to the oil inlet of the cooler 74.

[0036] The hydraulic regulation system further includes a pressure alarm mechanism 9, which includes a one-way throttle valve 91, a first shuttle valve 92, a second shuttle valve 93, a third shuttle valve 94, and a fourth shuttle valve 95. The load sensing port of the main pump group 72 is communicated with the oil inlet of the one-way throttle valve 91. The oil outlet of the one-way throttle valve 91 is respectively communicated with the load sensing ports of the first shuttle valve 92, the second shuttle valve 93, the third shuttle valve 94, the fourth shuttle valve 95, and the compensator 18. One working port of the first shuttle valve 92 is respectively communicated with the rod chambers of each locking cylinder 83, and the other working port of the first shuttle valve 92 is respectively communicated with the rodless chambers of each locking cylinder 83. The two working ports of the second shuttle valve 93 are respectively communicated with the two oil outlets of the one-way throttle valve group 15. The two working ports of the third shuttle valve 94 are respectively communicated with the two oil outlets of the angle main control valve 32. The two working ports of the fourth shuttle valve 95 are respectively communicated with the second working port of the electromagnetic switching valve 38 and the oil inlet of the speed control valve 37. The electromagnetic switching valve 38 is a two-position four-way electromagnetic reversing valve. The oil outlet of the speed control valve is respectively communicated with the oil inlets of the rod chambers of the two brake cylinders 39. The telescopic rod of the brake cylinder 39 is elastically matched with the cylinder seat of the brake cylinder 39 through a spring. The spring is arranged in the rodless chamber of the brake cylinder 39. A brake caliper is fixedly arranged at the end of the telescopic rod of the brake cylinder 39, and the brake caliper is in transmission cooperation with the rotating shaft 41.

[0037] The hydraulic pump station 7 further includes an emergency pump group 76, which is a gear pump driven by a motor. The oil inlet of the emergency pump group 76 is arranged in the hydraulic oil tank 71. The oil outlet of the emergency pump group 76 is communicated with the oil inlet of the pressure detection component 73. One end of the angle adjustment mechanism 3 is fixedly connected to the bottom of the fixed bracket 2, and a limit plate 40 is fixedly arranged at the other end of the angle adjustment mechanism 3. A limit hole matching with the cylinder seat of the lifting cylinder 11 is opened at each end of the limit plate 40. The two ends of the limit plate 40 are slidably matched with the corresponding lifting cylinders 11 through the limit holes opened thereon.

[0038] The explosion-proof overflow balance device 13 includes an explosion-proof valve 96, a secondary overflow valve 97, and a lifting balance valve 98. The oil outlets of the lifting balance valves 98 in the two explosion-proof overflow balance devices 13 are communicated with each other, and the working ports of the lifting balance valves 98 in the two explosion-proof overflow balance devices 13 are communicated with each other. The rodless chamber of the lifting cylinder 11 is communicated with the oil inlet of the lifting balance valve 98, and the two working ports of the secondary overflow valve 97 are respectively connected in parallel at both ends of the lifting balance valve 98. The principle of the present invention is described as follows:

[0039] In this design, the main pump group 72 is a series of fixed displacement pumps driven by a motor and a load sensing pump. The load sensing port of the main pump group 72 is connected to the oil circuits in the height adjustment mechanism 1, the angle adjustment mechanism 3, and the locking mechanism 8. When the oil pressure in the oil circuits of the height adjustment mechanism 1, the angle adjustment mechanism 3, and the locking mechanism 8 is lower than the working range, the emergency pump group 76 in the system starts to work. When the oil pressure in the oil circuits of the height adjustment mechanism 1, the angle adjustment mechanism 3, and the locking mechanism 8 is higher than the working range, the system automatically shuts down. Embodiment

[0040] A hydraulic regulating system for the position of a propeller. The hydraulic regulating system includes: a height regulating mechanism 1, a fixed bracket 2, an angle regulating mechanism 3, and a propeller propulsion device 4. The height regulating mechanism 1 is fixedly arranged on the stern steel plate 5. The power output end of the height regulating mechanism 1 passes through the stern steel plate 5 and is fixedly connected to the side of the fixed bracket 2. The fixed bracket 2 is sleeved on the upper end of the angle regulating mechanism 3. The power output end of the height regulating mechanism 1 is in transmission cooperation with the angle regulating mechanism 3 through the fixed bracket 2. The housing of the angle regulating mechanism 3 passes through the stern steel plate 5 and is in sliding cooperation with the stern steel plate 5. The housing of the angle regulating mechanism 3 is in sealing cooperation with the stern steel plate 5. The rotating shaft 41 of the angle regulating mechanism 3 is fixedly connected to the top of the propeller propulsion device 4. The oil inlets of the height regulating mechanism 1 and the angle regulating mechanism 3 are both connected to the oil outlet of the hydraulic pump station 7. The hydraulic pump station 7 includes a hydraulic oil tank 71, a main pump group 72, a pressure detection component 73, a cooler 74, and a filter 75. The main pump group 72 is a load-sensitive pump in series with a fixed-displacement pump driven by an electric motor. The oil inlet of the main pump group 72 is arranged in the hydraulic oil tank 71. The oil outlet of the main pump group 72 is connected to the oil inlet of the pressure detection component 73. The oil outlet of the pressure detection component 73 is respectively connected to the oil inlets of the height regulating mechanism 1, the angle regulating mechanism 3, and the locking mechanism 8. The oil return ports of the height regulating mechanism 1, the angle regulating mechanism 3, and the locking mechanism 8 are all connected to the oil inlet of the cooler 74. The oil outlet of the cooler 74 is connected to the oil inlet of the filter 75. The oil outlet of the filter 75 is connected to the oil return port of the hydraulic oil tank 71. The height regulating mechanism 1 includes two lifting cylinders 11. The oil inlets of the two lifting cylinders 11 are both connected to the oil outlet of the hydraulic pump station 7. The oil outlets of the two lifting cylinders 11 are both connected to the oil return port of the hydraulic pump station 7. The two lifting cylinders 11 are respectively arranged on both sides of the propeller propulsion device 4. The cylinder bases of each lifting cylinder 11 are fixedly arranged on the outside of the stern steel plate 5. The cylinder bases of each lifting cylinder 11 are in sealing connection with the stern steel plate 5. The telescopic rods of each lifting cylinder 11 pass through the stern steel plate 5 and are fixedly connected to both sides of the bottom of the fixed bracket 2. The angle regulating mechanism 3 is arranged between the two lifting cylinders 11.The hydraulic adjustment system includes a locking mechanism 8, and the locking mechanism 8 includes a directional control valve 81, a speed control valve 82, and two locking cylinders 83. The directional control valve 81 is a three-position four-way O-type function electromagnetic directional control valve. The oil inlet of the directional control valve 81 is communicated with the oil outlet of the pressure detection component 73. The oil return port of the directional control valve 81 is communicated with the oil inlet of the cooler 74. The first working port of the directional control valve 81 is communicated with the first working port of the speed control valve 82. The second working port of the directional control valve 81 is communicated with the second working port of the speed control valve 82. The first working port of the speed control valve 82 is communicated with the rod chamber oil ports of the two locking cylinders 83. The second working port of the speed control valve 82 is communicated with the rodless chamber oil ports of the two locking cylinders 83. A support block is fixedly arranged at the end of the telescopic rod of each of the two locking cylinders 83, and the two support blocks are respectively in limit fit with the two ends of the bottom of the fixed bracket; The angle adjustment mechanism 3 includes a compensator 31, an angle main control valve 32, a balance valve 33, and two hydraulic motors 34. The angle main control valve 32 is a three-position four-way Y-type function proportional directional control valve. The oil inlet of the compensator 31 is communicated with the oil outlet of the pressure detection component 73. The oil outlet of the compensator 31 is communicated with the oil inlet of the angle main control valve 32. The first working port of the angle main control valve 32 is communicated with the oil inlet of the first loop of the balance valve 33. The oil outlet of the first loop of the balance valve 33 is respectively communicated with the first working ports of the two hydraulic motors 34. The second working port of the angle main control valve 32 is communicated with the oil inlet of the second loop of the balance valve 33. The oil outlet of the second loop of the balance valve 33 is respectively communicated with the second working ports of the two hydraulic motors 34. The drain ports of the two hydraulic motors 34 are both communicated with the oil inlet of the cooler 74. The first loop and the second loop of the balance valve 33 are communicated through three balance loops, two of the balance loops are each provided with a safety valve 35, and the other balance loop is provided with a cut-off valve 36; The hydraulic adjustment system further includes two guide rails 6. The ends of the two guide rails 6 are fixedly arranged inside the stern steel plate 5. The two guide rails 6 are respectively arranged on both sides of the angle adjustment mechanism 3. A limit hole is opened at the position corresponding to the two guide rails 6 on the fixed bracket 2. The fixed bracket 2 is slidably matched with the two guide rails 6 through the two limit holes opened thereon;The height adjustment mechanism 1 includes two lifting cylinders 11, a flow dividing and collecting valve 12, two explosion-proof overflow balancing devices 13, a safety valve 14, a one-way throttle valve group 15, a manual reversing valve 16, a height main control valve 17, a compensator 18, a primary safety valve 19, and a secondary safety valve 20. The manual reversing valve 16 is a three-position four-way O-type function manual reversing valve, and the height main control valve 17 is a three-position four-way O-type function proportional reversing valve. The oil inlets of the manual reversing valve 16, the height main control valve 17, the primary safety valve 19, and the secondary safety valve 20 are all connected to the oil outlet of the pressure detection assembly 73. The oil return ports of the safety valve 14, the manual reversing valve 16, the height main control valve 17, the primary safety valve 19, and the secondary safety valve 20 are connected to the oil inlet of the cooler 74. The first oil inlet of the manual reversing valve 16 is connected to the first working port of the height main control valve 17 and the first working port of the one-way throttle valve group 15. The second oil inlet of the manual reversing valve 16 is connected to the second working port of the height main control valve 17 and the second working port of the one-way throttle valve group 15. The first oil outlet of the one-way throttle valve group 15 is connected to the collecting port of the flow dividing and collecting valve 12. The two oil outlets of the flow dividing and collecting valve 12 are respectively connected to the rod chambers of the two lifting cylinders 11. The second oil outlet of the one-way throttle valve group 15 is respectively connected to the oil inlets of the two explosion-proof overflow balancing devices 13. The two explosion-proof overflow balancing devices 13 are respectively connected to the rodless chambers of the two lifting cylinders 11. The first oil outlet and the second oil outlet of the one-way throttle valve group 15 are both connected to the oil inlet of the safety valve 14. The oil return port of the safety valve 14 is connected to the oil inlet of the cooler 74;The hydraulic regulation system further includes a pressure alarm mechanism 9, which includes a one-way throttle valve 91, a first shuttle valve 92, a second shuttle valve 93, a third shuttle valve 94, and a fourth shuttle valve 95. The load sensing port of the main pump group 72 is connected to the oil inlet of the one-way throttle valve 91. The oil outlet of the one-way throttle valve 91 is respectively connected to the load sensing ports of the first shuttle valve 92, the second shuttle valve 93, the third shuttle valve 94, the fourth shuttle valve 95, and the compensator 18. One working port of the first shuttle valve 92 is respectively connected to the rod chamber oil circuits of each locking cylinder 83, and the other working port of the first shuttle valve 92 is respectively connected to the rodless chamber oil circuits of each locking cylinder 83. The two working ports of the second shuttle valve 93 are respectively connected to the two oil outlets of the one-way throttle valve group 15. The two working ports of the third shuttle valve 94 are respectively connected to the two oil outlets of the angle main control valve 32. The two working ports of the fourth shuttle valve 95 are respectively connected to the second working port of the electromagnetic switching valve 38 and the oil inlet of the speed control valve 37. The electromagnetic switching valve 38 is a two-position four-way electromagnetic reversing valve. The oil outlet of the speed control valve is respectively connected to the oil inlets of the rod chambers of the two braking cylinders 39. The telescopic rod of the braking cylinder 39 is elastically matched with the cylinder seat of the braking cylinder 39 through a spring. The spring is arranged in the rodless chamber of the braking cylinder 39. A brake caliper is fixedly arranged at the end of the telescopic rod of the braking cylinder 39. The brake caliper is in transmission cooperation with the rotating shaft 41.; Embodiment

[0041] Embodiment 2 is basically the same as Embodiment 1, and the differences are as follows:

[0042] The hydraulic pump station 7 further includes an emergency pump group 76. The emergency pump group 76 is a gear pump driven by a motor. The oil inlet of the emergency pump group 76 is arranged in the hydraulic oil tank 71. The oil outlet of the emergency pump group 76 is connected to the oil inlet of the pressure detection component 73. One end of the angle adjustment mechanism 3 is fixedly connected to the bottom of the fixed bracket 2. A limit plate 40 is fixedly arranged at the other end of the angle adjustment mechanism 3. A limit hole matching the cylinder seat of the lifting cylinder 11 is opened at each end of the limit plate 40. Both ends of the limit plate 40 are slidably matched with the corresponding lifting cylinder 11 through the limit holes opened thereon. Embodiment

[0043] Embodiment 3 is basically the same as Embodiment 2, and the differences are as follows:

[0044] The explosion-proof overflow balance device 13 includes an explosion-proof valve 96, a secondary overflow valve 97, and a lifting balance valve 98. The oil outlets of the lifting balance valves 98 in the two explosion-proof overflow balance devices 13 are interconnected, and the working ports of the lifting balance valves 98 in the two explosion-proof overflow balance devices 13 are interconnected. The rodless cavity of the lifting oil cylinder 11 is connected to the oil inlet of the lifting balance valve 98, and the two working ports of the secondary overflow valve 97 are respectively connected in parallel at both ends of the lifting balance valve 98.

Claims

1. A hydraulic propeller position adjustment system, characterized in that: The hydraulic adjustment system includes: a height adjustment mechanism (1), a fixed bracket (2), an angle adjustment mechanism (3), and a propeller propulsion device (4); the height adjustment mechanism (1) is fixedly arranged on the stern steel plate (5), the power output end of the height adjustment mechanism (1) passes through the stern steel plate (5) and is fixedly connected to the side of the fixed bracket (2), the fixed bracket (2) is sleeved on the upper end of the angle adjustment mechanism (3), the power output end of the height adjustment mechanism (1) is in transmission cooperation with the angle adjustment mechanism (3) through the fixed bracket (2), the housing of the angle adjustment mechanism (3) passes through the stern steel plate (5) and is in sliding cooperation with the stern steel plate (5), the housing of the angle adjustment mechanism (3) is in sealing cooperation with the stern steel plate (5), the rotating shaft (41) of the angle adjustment mechanism (3) is fixedly connected to the top of the propeller propulsion device (4), and the oil inlets of the height adjustment mechanism (1) and the angle adjustment mechanism (3) are both communicated with the oil outlet of the hydraulic pump station (7); The hydraulic pump station (7) includes a hydraulic oil tank (71), a main pump group (72), a pressure detection component (73), a cooler (74), and a filter (75). The main pump group (72) is a load-sensitive pump in series with a fixed-displacement pump driven by a motor. The oil inlet of the main pump group (72) is arranged in the hydraulic oil tank (71). The oil outlet of the main pump group (72) is communicated with the oil inlet of the pressure detection component (73). The oil outlet of the pressure detection component (73) is respectively communicated with the oil inlets of the height adjustment mechanism (1), the angle adjustment mechanism (3), and the locking mechanism (8). The oil return ports of the height adjustment mechanism (1), the angle adjustment mechanism (3), and the locking mechanism (8) are all communicated with the oil inlet of the cooler (74). The oil outlet of the cooler (74) is communicated with the oil inlet of the filter (75). The oil outlet of the filter (75) is communicated with the oil return port of the hydraulic oil tank (71).

2. The hydraulic propeller position adjustment system according to claim 1, characterized in that: The height adjustment mechanism (1) includes two lifting cylinders (11). The oil inlets of the two lifting cylinders (11) are both communicated with the oil outlet of the hydraulic pump station (7). The oil outlets of the two lifting cylinders (11) are both communicated with the oil return port of the hydraulic pump station (7). The two lifting cylinders (11) are respectively arranged on both sides of the propeller propulsion device (4). The cylinder bases of each lifting cylinder (11) are fixedly arranged on the outer side of the stern steel plate (5). The cylinder bases of each lifting cylinder (11) are in sealing connection with the stern steel plate (5). The telescopic rods of each lifting cylinder (11) pass through the stern steel plate (5) and are fixedly connected to both sides of the bottom of the fixed bracket (2). The angle adjustment mechanism (3) is arranged between the two lifting cylinders (11).

3. The hydraulic propeller position adjustment system according to claim 2, characterized in that: The hydraulic adjustment system includes a locking mechanism (8). The locking mechanism (8) includes a reversing valve (81), a second speed control valve (82), and two locking cylinders (83). The reversing valve (81) is a three-position four-way O-type function electromagnetic reversing valve. The oil inlet of the reversing valve (81) is communicated with the oil outlet of the pressure detection component (73). The oil return port of the reversing valve (81) is communicated with the oil inlet of the cooler (74). The first working port of the reversing valve (81) is communicated with the first working port of the second speed control valve (82). The second working port of the reversing valve (81) is communicated with the second working port of the second speed control valve (82). The first working port of the second speed control valve (82) is communicated with the rod chambers of the two locking cylinders (83). The second working port of the second speed control valve (82) is communicated with the non-rod chambers of the two locking cylinders (83). A support block is fixedly arranged at the end of the telescopic rod of each of the two locking cylinders (83). The two support blocks are respectively in limit fit with the two ends of the bottom of the fixed bracket.

4. The hydraulic propeller position adjustment system according to claim 3, characterized in that: The angle adjustment mechanism (3) includes a second compensator (31), an angle main control valve (32), a balance valve (33), and two hydraulic motors (34). The angle main control valve (32) is a three-position four-way Y-type function proportional reversing valve. The oil inlet of the second compensator (31) is communicated with the oil outlet of the pressure detection component (73). The oil outlet of the second compensator (31) is communicated with the oil inlet of the angle main control valve (32). The first working port of the angle main control valve (32) is communicated with the oil inlet of the first loop of the balance valve (33). The oil outlet of the first loop of the balance valve (33) is respectively communicated with the first working ports of the two hydraulic motors (34). The second working port of the angle main control valve (32) is communicated with the oil inlet of the second loop of the balance valve (33). The oil outlet of the second loop of the balance valve (33) is respectively communicated with the second working ports of the two hydraulic motors (34). The drain ports of the two hydraulic motors (34) are both communicated with the oil inlet of the cooler (74). The first loop and the second loop of the balance valve (33) are communicated through three balance loops. Two of the balance loops are each provided with a second safety valve (35), and the other balance loop is provided with a cut-off valve (36).

5. The hydraulic propeller position adjustment system according to claim 4, characterized in that: The hydraulic adjustment system further includes two guide rails (6). The ends of the two guide rails (6) are fixedly arranged inside the stern steel plate (5). The two guide rails (6) are respectively arranged on both sides of the angle adjustment mechanism (3). A limit hole is respectively opened on the fixed bracket (2) at the positions corresponding to the two guide rails (6). The fixed bracket (2) is in sliding fit with the two guide rails (6) through the two limit holes opened thereon.

6. The hydraulic propeller position adjustment system according to any one of claims 2 to 5, characterized in that: The height adjustment mechanism (1) includes two lifting oil cylinders (11), a flow dividing and collecting valve (12), two explosion-proof overflow balancing devices (13), a first safety valve (14), a one-way throttle valve group (15), a manual reversing valve (16), a height main control valve (17), a first compensator (18), a primary safety valve (19), and a secondary safety valve (20). The manual reversing valve (16) is a three-position four-way O-type function manual reversing valve, and the height main control valve (17) is a three-position four-way O-type function proportional reversing valve. The oil inlets of the manual reversing valve (16), the height main control valve (17), the primary safety valve (19), and the secondary safety valve (20) are all connected to the oil outlet of the pressure detection component (73). The oil return ports of the first safety valve (14), the manual reversing valve (16), the height main control valve (17), the primary safety valve (19), and the secondary safety valve (20) are connected to the oil inlet of the cooler (74). The first oil inlet of the manual reversing valve (16) is connected to the first working port of the height main control valve (17) and the first working port of the one-way throttle valve group (15). The second oil inlet of the manual reversing valve (16) is connected to the second working port of the height main control valve (17) and the second working port of the one-way throttle valve group (15). The first oil outlet of the one-way throttle valve group (15) is connected to the collecting port of the flow dividing and collecting valve (12). The two oil outlets of the flow dividing and collecting valve (12) are respectively connected to the rod chambers of the two lifting oil cylinders (11). The second oil outlet of the one-way throttle valve group (15) is respectively connected to the oil inlets of the two explosion-proof overflow balancing devices (13). The two explosion-proof overflow balancing devices (13) are respectively connected to the rodless chambers of the two lifting oil cylinders (11). The first oil outlet and the second oil outlet of the one-way throttle valve group (15) are both connected to the oil inlet of the first safety valve (14). The oil return port of the first safety valve (14) is connected to the oil inlet of the cooler (74).

7. The hydraulic propeller position adjustment system according to claim 6, characterized in that: The hydraulic regulation system further includes a pressure alarm mechanism (9). The pressure alarm mechanism (9) includes a one-way throttle valve (91), a first shuttle valve (92), a second shuttle valve (93), a third shuttle valve (94) and a fourth shuttle valve (95). The load sensing port of the main pump set (72) is communicated with the oil inlet of the one-way throttle valve (91). The oil outlet of the one-way throttle valve (91) is respectively communicated with the load sensing ports of the first shuttle valve (92), the second shuttle valve (93), the third shuttle valve (94), the fourth shuttle valve (95) and the first compensator (18). One working port of the first shuttle valve (92) is respectively communicated with the rodless cavity oil circuits of each locking cylinder (83), and the other working port of the first shuttle valve (92) is respectively communicated with the rodless cavity oil circuits of each locking cylinder (83). The two working ports of the second shuttle valve (93) are respectively communicated with the two oil outlets of the one-way throttle valve group (15). The two working ports of the third shuttle valve (94) are respectively communicated with the two oil outlets of the angle main control valve (32). The two working ports of the fourth shuttle valve (95) are respectively communicated with the second working port of the electromagnetic switching valve (38) and the oil inlet of the first speed regulating valve (37). The electromagnetic switching valve (38) is a two-position four-way electromagnetic reversing valve. The oil outlet of the first speed regulating valve (37) is respectively communicated with the oil inlets of the rodless cavities of the two brake cylinders (39). The telescopic rod of the brake cylinder (39) is elastically matched with the cylinder seat of the brake cylinder (39) through a spring. The spring is arranged in the rodless cavity of the brake cylinder (39). A brake caliper is fixedly arranged at the end of the telescopic rod of the brake cylinder (39). The brake caliper is in transmission cooperation with the rotating shaft (41).

8. The hydraulic propeller position adjustment system according to claim 7, characterized in that: The hydraulic pump station (7) further includes an emergency pump set (76). The emergency pump set (76) is a gear pump driven by a motor. The oil inlet of the emergency pump set (76) is arranged in the hydraulic oil tank (71). The oil outlet of the emergency pump set (76) is communicated with the oil inlet of the pressure detection component (73). One end of the angle adjustment mechanism (3) is fixedly connected to the bottom of the fixed bracket (2). The other end of the angle adjustment mechanism (3) is fixedly provided with a limit plate (40). A limit hole matched with the cylinder seat of the lifting cylinder (11) is opened at each end of the limit plate (40). Both ends of the limit plate (40) are slidably matched with the corresponding lifting cylinders (11) through the limit holes opened thereon.

9. The hydraulic propeller position adjustment system according to claim 8, characterized in that: The explosion-proof overflow balance device (13) includes an explosion-proof valve (96), a secondary overflow valve (97), and a lifting balance valve (98). The oil outlets of the lifting balance valves (98) in the two explosion-proof overflow balance devices (13) are communicated with each other, and the working ports of the lifting balance valves (98) in the two explosion-proof overflow balance devices (13) are communicated with each other. The rodless cavity of the lifting cylinder (11) is communicated with the oil inlet of the lifting balance valve (98). The two working ports of the secondary overflow valve (97) are respectively connected in parallel at both ends of the lifting balance valve (98).

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